Rimmel London Wonder’Lash Volume Colourist Mascara Review

This mascara has staying power—quite literally. When she wore this daily for two weeks, our blonde-haired tester did, in fact, notice that her lashes were darker (and it most definitely wasn’t because she was doing a poor job of taking off her makeup at night). The tint comes courtesy of—wait for it—food coloring, and as cosmetic chemist Jim Hammer tells Allure, “it’s kind of like dyeing your hair with Kool-Aid as a kid. You get a temporary stain.” However, if you stop using it for a few days, the tint fades, too.